// .h文件 #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface ImageDandleTool : NSO
// .h文件
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface ImageDandleTool : NSObject
// 获取控件的坐标，传入用户图片
-(void)fullScreenWithUIView:(UIView *)view Image:(UIImage *)UserImage;
@end
// .m
#import "ImageDandleTool.h"
@interface ImageDandleTool ()<UIScrollViewDelegate>
@end
static CGRect oldFrame;
@implementation ImageDandleTool
-(void)fullScreenWithUIView:(UIView *)view Image:(UIImage *)UserImage{
UIImage *image = UserImage;
UIWindow *window = [UIApplication sharedApplication].keyWindow;
UIScrollView *scrollView = [[UIScrollView alloc]initWithFrame:[UIScreen mainScreen].bounds];
scrollView.maximumZoomScale = 1.5;
scrollView.minimumZoomScale = 1.0;
scrollView.bounces = NO;
scrollView.delegate = self;
// 坐标系的转化，将控件的坐标转换成目标视图中的坐标；
oldFrame = [view convertRect:view.bounds toView:window];
scrollView.backgroundColor = [UIColor blackColor];
scrollView.alpha = 0;
UIImageView *imageView = [[UIImageView alloc]initWithFrame:oldFrame];
imageView.image = image;
imageView.tag = 1;
[scrollView addSubview:imageView];
[window addSubview:scrollView];
// 添加点击手势；
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(fullScreenTapGR:)];
[scrollView addGestureRecognizer: tap];
[UIView animateWithDuration:0.3 animations:^{
imageView.frame=CGRectMake(0,([UIScreen mainScreen].bounds.size.height-image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width)/2,[UIScreen mainScreen].bounds.size.width, image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width);
scrollView.alpha=1;
}
completion:^(BOOL finished) {
}];
// 添加双击的手势；
UITapGestureRecognizer *tapTwo = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapTwoAction:)];
tapTwo.numberOfTapsRequired = 2;
[scrollView addGestureRecognizer:tapTwo];
// 当双击手势和单击手势共存的时候，只有没有检测到双击手势的时候，单击才有效；
[tap requireGestureRecognizerToFail:tapTwo];
}
//双击手势触发的方法；
-(void)tapTwoAction:(UITapGestureRecognizer *)sender{
UIScrollView *scrollView = (UIScrollView *)sender.view;
if (scrollView.zoomScale <= 1.0) {
[UIView animateWithDuration:0.3 animations:^{
scrollView.zoomScale = 1.5;
}];
}else{
[UIView animateWithDuration:0.3 animations:^{
scrollView.zoomScale = 1.0;
}];
}
}
// 点击退回原来的图片；
-(void)fullScreenTapGR:(UITapGestureRecognizer*)tap{
UIScrollView *backgroundView = (UIScrollView *)tap.view;
UIImageView *imageView=(UIImageView*)[tap.view viewWithTag:1];
[UIView animateWithDuration:0.3 animations:^{
imageView.frame=oldFrame;
backgroundView.alpha=0;
}
completion:^(BOOL finished) {
[backgroundView removeFromSuperview];
}];
}
//返回要缩放的控件；
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
return [scrollView viewWithTag:1];
}
//只要进行缩放，就会执行的该方法,使图片居中；
-(void)scrollViewDidZoom:(UIScrollView *)scrollView{
CGPoint cender = scrollView.center;
if (scrollView.zoomScale >1) {
cender.x = [UIScreen mainScreen].bounds.size.width/2 +((scrollView.zoomScale - 1) * [UIScreen mainScreen].bounds.size.width/2);
cender.y = [UIScreen mainScreen].bounds.size.height/2;
}
[scrollView viewWithTag:1].center = cender;
}
